<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>图片集合</title>
</head>
<body>
    <ul>
        <li><img src="images/1.png" alt=""/></li>
        <li><img src="images/2.png" alt=""/></li>
        <li><img src="images/3.png" alt=""/></li>
        <li><img src="images/4.png" alt=""/></li>
    </ul>
</body>
</html>